The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 1989
Filed:
May. 12, 1987
Applicant:
Inventors:
James E Chloupek, Plano, TX (US);
Richard E Boucher, Santa Clara, CA (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
331 / ; 328133 ; 307528 ;
Abstract
A phase-locked loop circuit having a charge pump and a voltage controlled oscillator which includes a phase/frequency comparator having a single circuit for operating in phase or frequency modes and which uses the discharge signal from the oscillator flip flop to trigger resetting of the input flip flop and which uses a one-shot in the phase compare mode for high frequency operation.